WO2012086693A1

WO2012086693A1 - Separation-preventing connector

Info

Publication number: WO2012086693A1
Application number: PCT/JP2011/079656
Authority: WO
Inventors: 隆志室
Original assignee: 矢崎総業株式会社
Priority date: 2010-12-21
Filing date: 2011-12-21
Publication date: 2012-06-28
Also published as: JP5635390B2; CN103262351B; KR101408440B1; CN103262351A; JP2012134011A; US9088105B2; KR20130086636A; US20130280941A1

Abstract

Provided is a separation-preventing connector in which separation of a terminal from a housing due to tension on a female connector housing or insertion into a female terminal does not occur. A separation-preventing connector (30) configured from a connector housing (10) provided with an opening (10L) and a rear surface opening (10R), and a terminal (20) inserted via the rear surface opening (10R) and held therein, wherein: a sidewall opening (10W) connecting the rear surface opening (10R) and the upper half of an opposite-side sidewall (10S2) is formed in the connector housing (10); a tapered projection (10M) is provided so as to project upward from the lower-side opening end surface (10W1) of the sidewall opening (10W); a tapered engaging recess (20M) is formed in the terminal (20) in a location facing the tapered projection (10M); a tapered hole (10K) is formed in one sidewall (10S1) of the connector housing (10); and a tapered projection (20K) for insertion into the tapered hole (10K) is formed on the terminal (20). Hence, by the sliding action of corresponding tapered parts, the terminal (20) slides in the horizontal direction and is supported within the connector housing (10).

Description

Unplug connector

The present invention relates to a connector for preventing disconnection, and in particular, on the back side of a PCB (printed circuit board) connector and a JC (Joint connector) in which terminals cannot be inserted from the frontage (insertion port into which the mating connector terminal is inserted). It is related with the connector provided with the prevention function which does not deteriorate a terminal holding force and an assembly property even if it inserts from the side.

<Connector described in Patent Document 1>
A general PCB (printed circuit board) terminal has a male terminal inserted from the front side (see, for example, Patent Document 1).
The reason is
(1) To prevent the resin from adhering to the contact portion.
(2) Because the accuracy of the male / female contact point is more important than the lead on the soldering side.
(3) To remove the tab when the female connector is inserted, or to generate a holding force between the male housing and the male terminal when the wire harness is pulled after the male / female connector is fitted.

Japanese Unexamined Patent Publication No. 2009-146659

FIG. 8 shows a conventional connector described in Patent Document 1.
8A is a perspective view of the connector housing, FIG. 8B is a horizontal cross-sectional view of FIG. 8A, and FIG. 8C is a horizontal cross-sectional view with a terminal inserted.
As shown in FIG. 8B, the connector housing 100 in FIG. 8A is a resin product having a terminal insertion hole in the back of the frontage. The terminal insertion hole is formed in a hole having a wide front side and a narrow back side, as shown in the enlarged round view below.
As shown in the enlarged view in the lower circle in FIG. 8C, the terminal 200 includes an insertion portion having a shape corresponding to the terminal insertion hole. When the terminal 200 is inserted into the terminal insertion hole, In the A direction, a sufficient shearing surface is secured, so that it is difficult to pull out the terminal in the A direction, but only the press-fitting allowance is held in the B direction.
Therefore, generally, the male terminal is inserted from the frontage side.

<Problem when terminal cannot be inserted from frontage>
For this reason, assembly from the front side is an advantage for the connector. However, when the terminal shape on the side opposite to the contact portion is larger, assembly from the front end side is impossible, and therefore, the connector housing is inverted and the terminal is inserted from the opposite side of the front end. In this case, as described above for the reason (3), since the terminal is pulled to the same side as the insertion direction with respect to the connector housing, there is a problem that the terminal is easily pulled out.

The present invention has been made to solve such a problem, and even if the connector is a type in which a terminal is inserted into the connector housing from the opposite side of the insertion port into which the mating connector terminal is inserted, the terminal holding force is provided. It is an object of the present invention to provide a connector housing which can improve disassembly and improve disassembly performance, and a disconnection prevention connector comprising terminals used therein.

The object of the present invention is achieved by the following constitution.
(1) A connector housing having an insertion port into which a mating connector terminal is inserted, and a rear opening that is a terminal insertion port into which its own terminal is inserted, and inserted into the connector housing through the rear opening. The connector housing is formed with a side wall opening continuous in the upper half from the back surface opening to the middle of one side wall of the connector housing. A portion facing a tapered protrusion on the one side wall of the terminal at a position where a tapered protrusion is erected upward from the lower opening end surface of the opening and the terminal is held inside the connector housing. Is formed with a tapered engaging recess into which the tapered protrusion enters, and the one of the connector housings A taper hole is formed in the other side wall opposite to the side wall of the connector, and faces the tapered hole of the other side wall of the terminal at a position where the terminal is held inside the connector housing. The portion is formed with a tapered protrusion that enters the tapered hole, and the terminal is prevented from being held in the connector housing by sliding in a direction perpendicular to the insertion direction of the terminal by the action of the tapers. connector.

(2) The connector according to (1) above, wherein the connector housing is formed with a guide protrusion extending from the one side wall in which the side wall opening is formed into the internal space of the connector housing. A connector for preventing disconnection, wherein the guide protrusion and the pin of the terminal are in contact with each other, and the tapered projection of the terminal is in contact with the inner wall of the connector housing, whereby insertion is performed while the terminal is regulated.

According to the configuration of (1), even if the connector is a type in which the terminal is inserted from the side opposite to the insertion port into which the mating connector terminal is inserted, the terminal can be prevented from being pulled out, so that the holding force can be improved. Moreover, since it can be easily disassembled by using a jig when disassembling, dismantling can also be improved.
According to the configuration (2), the terminals can be smoothly inserted into the connector housing.

FIG. 1 is an exploded perspective view of a connector for preventing disconnection comprising a connector housing and terminals according to an embodiment of the present invention, and is an exploded perspective view seen from the front side of the connector housing. FIG. 2 is a perspective view of the connector housing shown in FIG. 1 as viewed from the lower side of the front side of the connector housing. FIG. 3A is an exploded perspective view of the disconnection prevention connector in the state of FIG. 1 partially broken, and FIG. 3B is an exploded view of the opposite side of the disconnection prevention connector of FIG. It is a perspective view. 4A is a perspective view of the disconnection preventing connector in a state in which the terminal is inserted into the connector housing, and FIG. 4B is a perspective view of the disconnection preventing connector in the middle of inserting the terminal. ) Is a horizontal cross-sectional perspective view of the side surface on the opposite side of FIGS. 4A and 4B of the connector for preventing disconnection in which insertion of the terminal has further progressed. FIG. 5A is a partially broken perspective view of the disconnection preventing connector immediately before the terminal is fixed to the connector housing, and FIG. 5B is a partially broken perspective view of the disconnection preventing connector having the terminal fixed to the connector housing. is there. FIG. 6A is a perspective view of a disconnection preventing connector having terminals fixed to the connector housing, and FIG. 6B is a partially broken perspective view of the side opposite to the disconnection preventing connector of FIG. 5B. FIG. FIG. 7A is a perspective view of the front side of the connector housing to which the terminals are fixed, and FIG. 7B is a perspective view of the opposite side of the connector housing to which the terminals are fixed. 8A is a perspective view of a connector housing in a conventional connector, FIG. 8B is a horizontal cross-sectional view of FIG. 8A, and FIG. 8C is a horizontal cross-sectional view with a terminal inserted.

Hereinafter, a connector for inserting a terminal from the opposite side of the insertion port into which the mating connector terminal is inserted, and a connector for preventing disconnection that can improve the holding force and dismantling property of the terminal with reference to the drawings. explain.
<Configuration of the disconnection preventing connector according to this embodiment>
1 to 7, a disconnection preventing connector 30 according to an embodiment of the present invention includes a connector housing 10 and a connector from the opposite side of the connector housing 10 opening (insertion port into which the mating connector terminal is inserted) 10L. The terminal 20 is inserted into the internal space of the housing 10.
Below, the connector housing 10 and the terminal 20 which concern on one Embodiment of this invention are demonstrated.

<Configuration of connector housing 10 according to this embodiment>
The connector housing 10 according to the present embodiment is a resin molded product having a front opening 10L (see FIG. 1) into which a mating connector terminal is inserted, and is connected to a terminal 20 from a rear opening 10R (see FIG. 2) on the opposite side of the front opening 10L. (Refer to FIG. 1) is inserted into the internal space of the connector housing 10.
The characteristics of the connector housing 10 are as follows:
(1) One side wall (the other side wall) 10S1 (FIGS. 1, 2, and 3A) has a tapered hole 10K (FIGS. 1, 2, and 3A),
(2) A tapered protrusion 10M (FIG. 3 (B)) is erected on the lower opening end face of a side wall opening 10W (described later) of the opposite side wall (one side wall) 10S2 (FIG. 3 (B)). It is.

<Tapered hole 10K according to this embodiment>
In FIGS. 1, 2, and 3A, a tapered hole 10K is formed in one side wall 10S1. The tapered hole 10K is a rectangular hole, and has a size capable of inserting a tapered protrusion 20K (FIGS. 1 and 3A), which will be described later, into the tapered hole 10K. A convex taper (taper) T1 having a substantially semicircular arc shape is formed in the thickness portion of the one side wall 10S1 that forms the upper side of the rectangle.

<Tapered projection 10M according to this embodiment>
In FIG. 2, a rear opening 10R is formed on the opposite side of the front opening 10L (see FIG. 1), and the rear opening 10R is further bent over the wall surface on the right side to thereby face the opposite side wall 10S2. A side wall opening 10W is formed that extends to the end of the opposite side wall 10S2 and finally opens up to about half of the upper half. A tapered protrusion 10M is erected upward from the lower opening end face 10W1 of the side wall opening 10W. The height of the tapered protrusion 10M is the thickness of the terminal 20, and the width is the width of a tapered engaging recess 20M described later of the terminal 20. A convex taper (taper) T2 having a substantially semicircular arc shape is formed from the top of the tapered protrusion 10M toward the lower side in the inner direction.
Further, a tab side (guide protrusion) 10T (see FIG. 5) extending into the internal space of the connector housing 10 is formed on the opposite side wall 10S2 from the tapered protrusion 10M to the front opening 10L side, and the length of the tab side (guide protrusion) 10T is a terminal. The length is in contact with 20 male terminals (pins) 20P.

<Configuration of terminal 20 according to this embodiment>
The terminal 20 according to this embodiment includes a rectangular base portion 20B and two male terminals 20P that extend integrally from the base portion 20B toward the mating connector terminal and are inserted into the mating connector terminal (female). It is a metal plate. The terminal 20 is inserted into the internal space of the connector housing from the rear opening 10R (see FIG. 2) where the male terminal 20P is opposite to the opening 10L of the connector housing 10, and finally the entire terminal 20 is inserted into the connector housing 10. And fixed.
The characteristics of this terminal 20 are
(1) At a position where the terminal 20 is held inside the connector housing 10, the side (part) of the rectangular base 20B facing the tapered hole 10K of the one side wall 10S1 (see FIG. 1) is tapered. A tapered protrusion 20K (see FIGS. 1 and 3A) for entering the hole 10K is formed;
(2) At the position where the terminal 20 is held inside the connector housing 10, the taper of the connector housing 10 is formed on the side (part) of the rectangular base portion 20 B facing the tapered protrusion 10 M of the opposite side wall 10 S 2 (see FIG. 2). That is, a tapered engagement recess 20M (see FIGS. 1 and 3B) for engaging and entering the attached protrusion 10M is formed.

<Tapered projection 20K according to this embodiment>
1 and 3, the tapered protrusion 20 K is a protrusion having a size capable of entering the rectangular tapered hole 10 K formed in the connector housing 10 without excess and deficiency, and is formed in the rectangular tapered hole 10 K. Similarly, a substantially semicircular arc-shaped convex taper T1 is formed at a portion facing the substantially semicircular arc-shaped convex taper T1.

<Tapered engaging recess 20M according to this embodiment>
In FIG. 1, FIG. 3 (A), FIG. 3 (B), the tapered engagement recess 20M is a recess of a size that allows the tapered protrusion 10M formed on the connector housing 10 to enter without excess and deficiency, and A substantially semicircular arc-shaped convex taper T2 is also formed at a portion facing the substantially semicircular arc-shaped convex taper T2 formed on the tapered protrusion 10M.

<Assembly Procedure of Terminal 20 in Connector Housing 10>
A procedure for assembling the terminal 20 according to the present embodiment into the connector housing 10 according to the present embodiment will be described.
(1) First, the two male terminals 20P of the terminal 20 are inserted into the internal space of the connector housing 10 from the rear opening 10R of the connector housing 10 (see FIG. 2). FIG. 4A shows this state.
(2) Continue the insertion. FIG. 4B shows this state. Neither the tapered protrusion 20K nor the tapered engaging recess 20M is engaged with the engaging portion counterpart of the connector housing 10 yet. The male terminal 20P of the terminal 20 is in contact with the tab side 10T formed to protrude inside the connector housing 10, and the tapered protrusion 20K of the terminal 20 is in contact with the inner wall of the one side wall 10S1 of the connector housing 10, whereby the terminal 20 is Insertion is performed while being regulated.
(3) When the insertion is further continued, a cross bar 20N (see FIG. 1) in the insertion direction that forms a tapered engagement recess 20M formed in the base 20B of the terminal 20 is formed in the connector housing 10. Hit the tapered protrusion 10M. Therefore, when the base 20B of the terminal 20 is lifted upward so that the cross 20N gets over the tapered protrusion 10M, the cross 20N gets over the tapered protrusion 10M so that the tapered engaging recess 20M faces the tapered protrusion 10M. become. At the same time, on one side wall 10S1 of the connector housing 10, the tapered protrusion 20K is opposed to the tapered hole 10K. FIG. 5A shows this state.
(4) When the tapered engagement concave portion 20M reaches a position facing the tapered protrusion 10M, the tapered engagement concave portion 20M located at the upper portion has a convex shape of the tapered protrusion 10M at which the convex taper T2 is located at the lower portion. The taper slides (slides) on the taper T2 in a direction perpendicular to the insertion direction into the connector housing 10, and engages with the tapered protrusion 10M.
At the same time, the tapered protrusion 20K on the side of the one side wall 10S1 also has a convex taper T1 in a direction to be separated from the connector housing 10 at a right angle to the insertion direction under the convex taper T1 of the tapered hole 10K of the connector housing 10. It sinks (slides) and engages with the tapered hole 10K. FIG. 5B, FIG. 6A, FIG. 6B, and FIG. 7 show this state.
In this state, since the terminal 20 and the connector housing 10 have a sufficient shear surface, they are not detached by pulling the female connector housing or inserting the female terminals.

<How to release the hold>
When it is desired to remove the terminal 20 from the connector housing 10 (to release the holding), a jig or the like is inserted into the tapered hole 10K, and the terminal 20 is pushed and lifted to be held on the internal convex tapers T1 and T2. Is released and can be easily removed.

<Summary>
As described above, according to the present embodiment, a tapered protrusion for entering the tapered hole of the connector housing side wall is formed on one side of the terminal base, and the tapered protrusion on the opposite side wall of the connector housing is engaged with the opposite side of the terminal base. By forming the tapered engaging recess for the purpose, the terminal and the connector housing have a sufficient shearing surface, so that they are not detached by pulling the female connector housing or inserting the female terminal.
Further, when the terminal is removed from the connector housing, by inserting a jig or the like into the tapered hole and pushing the terminal so as to lift it up, the holding is released along the internal taper and can be easily removed. Thus, even in a connector of a type in which a terminal is inserted from the opposite side of the insertion port into which the mating connector terminal is inserted, since the terminal cannot be removed, the holding force can be improved. Since it can be easily disassembled by using, disassembly can be improved.

In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.
The present application is based on a Japanese patent application (Japanese Patent Application No. 2010-285093) filed on Dec. 21, 2010, the contents of which are incorporated herein by reference.

According to the connector for preventing disconnection according to the present invention, even if the connector is a type of connector in which the terminal is inserted into the connector housing from the opposite side of the insertion port into which the mating connector terminal is inserted, the holding force of the terminal is improved and the dismantling property is improved. Can be improved.

10 Connector housing 10K Tapered hole 10L Frontage (Insertion port into which mating connector terminal is inserted)
10M Tapered projection 10R Rear opening 10S1 One side wall (the other side wall)
10S2 Opposite side wall (one side wall)
10T tab side (guide protrusion)
10W Side wall opening 20 Terminal 20B Base 20K Tapered protrusion 20M Tapered engagement recess 20N Yokogi 20P Male terminal (pin)
30 Pull-out prevention connector T1 Convex taper
T2 Convex taper (taper)

Claims

A connector housing having an insertion port into which a mating connector terminal is inserted, and a back opening that is a terminal insertion port into which its own terminal is inserted, and is inserted through the back opening and held inside the connector housing. A connector composed of terminals,
The connector housing is formed with a side wall opening that is continuous in the upper half from the back surface opening to the middle of one side wall of the connector housing, and has a tapered protrusion extending upward from the lower opening end surface of the side wall opening. A tapered engagement recess into which the tapered projection enters is formed at a portion of the terminal facing the tapered projection on the one side wall at a position where the terminal is held inside the connector housing. Has been
A taper hole is formed in the other side wall of the connector housing opposite to the one side wall, and the terminal of the other side wall of the terminal is held at a position where the terminal is held inside the connector housing. A tapered protrusion that enters the tapered hole is formed at a portion facing the tapered hole,
An anti-disconnection connector in which the terminal slides in a direction perpendicular to the insertion direction of the terminal by the action of the tapers and is held in the connector housing.
A guide protrusion that extends from the side wall of the connector housing where the side wall opening is formed into the internal space of the connector housing is formed, the guide protrusion and the pin of the terminal are in contact, and the taper of the terminal A disconnection preventing connector in which insertion is performed while the terminal is regulated by contact of a protrusion with an inner wall of the connector housing.